tests/cases/compiler/inheritedStringIndexersFromDifferentBaseTypes.ts(13,11): error TS2430: Interface 'E' incorrectly extends interface 'D'.
  Index signatures are incompatible.
    Type 'number' is not assignable to type 'string'.
tests/cases/compiler/inheritedStringIndexersFromDifferentBaseTypes.ts(28,11): error TS2430: Interface 'E2' incorrectly extends interface 'D2'.
  Index signatures are incompatible.
    Type 'number' is not assignable to type 'string'.


==== tests/cases/compiler/inheritedStringIndexersFromDifferentBaseTypes.ts (2 errors) ====
    // string indexer tests
    interface A {
        [s: string]: number;
    }
    interface B {
        [s: string]: number;
    }
    interface C extends A, B { } // ok
    
    interface D {
        [s: string]: string;
    }
    interface E extends A, D { } // error
              ~
!!! error TS2430: Interface 'E' incorrectly extends interface 'D'.
!!! error TS2430:   Index signatures are incompatible.
!!! error TS2430:     Type 'number' is not assignable to type 'string'.
    
    
    // Same tests for number indexer
    interface A2 {
        [s: number]: number;
    }
    interface B2 {
        [s: number]: number;
    }
    interface C2 extends A2, B2 { } // ok
    
    interface D2 {
        [s: number]: string;
    }
    interface E2 extends A2, D2 { } // error
              ~~
!!! error TS2430: Interface 'E2' incorrectly extends interface 'D2'.
!!! error TS2430:   Index signatures are incompatible.
!!! error TS2430:     Type 'number' is not assignable to type 'string'.